NIU Hailiang 1, CHENG Yue 1, CAO Ting 1, ZHU Haijie 1, YUAN Fengping 1,JIANG Jiaxiang 2, DUAN Junling 2
(1. School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, Jiangxi, China;2. Jingdezhen Vocational University of Art, Jingdezhen 333403, Jiangxi, China)
Abstract: Diatom ooze was used as silicon source to synthesize ZSM-5 zeolite and melamine was used as the precursor to obtain g-C3N4. Then, the as-synthesized molecular sieves (without removing the template agent) and the melamine were mixed and heated. After that, ZSM-5 zeolite @g-C3N4 was synthesized with the removal of the template agent. The samples were characterized by using XRD, SEM, TEM, EDS and DTA. With methylene blue as the target pollutant, photocatalytic performance of the ZSM-5 zeolite @g-C3N4 was studied, in terms of dose quantity, pH value, initial concentration and illumination time. When the ZSM-5 zeolite @g-C3N4 dose quantity was 8 g•L−1, illumination time was 3h, initial concentration was 5 mg•L−1 and the pH value was 11, the degradation rate of methylene blue was as high as 92.43%.
Key words: diatom ooze; ZSM-5 molecular sieve; methylene blue; g-C3N4; photocatalysis